/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.android.apis.graphics;

import android.content.Context;
import android.graphics.*;
import android.graphics.drawable.*;
import android.os.Bundle;
import android.view.*;

public class RoundRects extends GraphicsActivity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(new SampleView(this));
	}

	private static class SampleView extends View {
		private Path mPath;
		private Paint mPaint;
		private Rect mRect;
		private GradientDrawable mDrawable;

		public SampleView(Context context) {
			super(context);
			setFocusable(true);

			mPath = new Path();
			mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
			mRect = new Rect(0, 0, 120, 120);

			mDrawable = new GradientDrawable(
					GradientDrawable.Orientation.TL_BR, new int[] { 0xFFFF0000,
							0xFF00FF00, 0xFF0000FF });
			mDrawable.setShape(GradientDrawable.RECTANGLE);
			mDrawable.setGradientRadius((float) (Math.sqrt(2) * 60));
		}

		static void setCornerRadii(GradientDrawable drawable, float r0,
				float r1, float r2, float r3) {
			drawable.setCornerRadii(new float[] { r0, r0, r1, r1, r2, r2, r3,
					r3 });
		}

		@Override
		protected void onDraw(Canvas canvas) {

			mDrawable.setBounds(mRect);

			float r = 16;

			canvas.save();
			canvas.translate(10, 10);
			mDrawable.setGradientType(GradientDrawable.LINEAR_GRADIENT);
			setCornerRadii(mDrawable, r, r, 0, 0);
			mDrawable.draw(canvas);
			canvas.restore();

			canvas.save();
			canvas.translate(10 + mRect.width() + 10, 10);
			mDrawable.setGradientType(GradientDrawable.RADIAL_GRADIENT);
			setCornerRadii(mDrawable, 0, 0, r, r);
			mDrawable.draw(canvas);
			canvas.restore();

			canvas.translate(0, mRect.height() + 10);

			canvas.save();
			canvas.translate(10, 10);
			mDrawable.setGradientType(GradientDrawable.SWEEP_GRADIENT);
			setCornerRadii(mDrawable, 0, r, r, 0);
			mDrawable.draw(canvas);
			canvas.restore();

			canvas.save();
			canvas.translate(10 + mRect.width() + 10, 10);
			mDrawable.setGradientType(GradientDrawable.LINEAR_GRADIENT);
			setCornerRadii(mDrawable, r, 0, 0, r);
			mDrawable.draw(canvas);
			canvas.restore();

			canvas.translate(0, mRect.height() + 10);

			canvas.save();
			canvas.translate(10, 10);
			mDrawable.setGradientType(GradientDrawable.RADIAL_GRADIENT);
			setCornerRadii(mDrawable, r, 0, r, 0);
			mDrawable.draw(canvas);
			canvas.restore();

			canvas.save();
			canvas.translate(10 + mRect.width() + 10, 10);
			mDrawable.setGradientType(GradientDrawable.SWEEP_GRADIENT);
			setCornerRadii(mDrawable, 0, r, 0, r);
			mDrawable.draw(canvas);
			canvas.restore();
		}
	}
}
